Keystones — Lintel
Five GCSE retrieval questions · 3 August 2019 · mathsvault.uk/keystones
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1. Number Converting to standard form
0.073
Answer: 7.3 × 10-2 -
2. Algebra Factorising monic quadratics
Factorise: x² - 7x + 12
Answer: (x - 3)(x - 4) -
3. Geometry SOHCAHTOA — missing length
Hypotenuse = 34cm, angle = 32°. Find adjacent side
Answer: 28.8cm -
4. Ratio Mixed ratio problems
In ratio 1:3:4, what fraction is the second part?
Answer: 3⁄8 -
5. Statistics Mean
Calculate the mean of: 32, 8, 23, 12, 14, 6, 16
Answer: 15.9